H. Chen et al., InAs quantum-dot lasers operating near 1.3 mu m with high characteristic temperature for continuous-wave operation, ELECTR LETT, 36(20), 2000, pp. 1703-1704
A high characteristic temperature with To of 126K under continuous-wave ope
ration is obtained for an InAs/GaAs quantum dot laser. A triple-stacked act
ive region with an energy separation of 95meV between the ground and first
excited radiative transitions is used to achieve a ground state saturation
gain at 300K of 13cm(-1), and high internal quantum efficiency of 74%.